There are several threads on the intervention in Greece (Athens mainly) in 1944 and the following Greek Civil War, alas unable to find a suitable place for this notice. On the 5th June if you an Oxford University member there is a talk by the historian Christina Goulter (Kings College & UK Staff College) 'Forewarned? British Intelligence Assessments of the Communist Threat to Greece, 1944-45'. See: ‘Forewarned? British Intelligence Assessments of the Communist Threat to Greece, 1944-45’ Her KCL bio refers to: 'Her latest book deals with British intervention in the second round of the Greek Civil War, examining COIN operations and urban Close Air Support'. See: Dr Christina Goulter Alas I am not an Oxford University member, nor on a quick search was her book identified. For those interested it may be worth checking the usual websites.
https://www.amazon.ca/Forgotten-Offensive-Commands-Anti-Shipping-1940-1945/dp/0714641472 This was her previous book which was quite good. No listing yet that I can find for her new work but I'll post if it shows up. Sounds good though.
A re-issue of a classic book 'The Struggle for Greece 1941-1949' by C.M. Woodhouse. See publisher's website (40% discount if you join mailing list before 22/9/2019): The Struggle for Greece | Hurst Publishers